Drilling-machine



2 Sheets-Sheet 1. E. R. LOCKWOOD.

DRILLING MACHINE.

(No Model.)

Patented Sept. 5'r

W12' ESSES .Liliana/y? (No Model.) 2 Sheets-Sheet 2. E. R. LOGKWOOD'.

' DRILLING MAGEINB.

No. 504,599.v Patented Sept. 5, 1893.

NiTED STATES PATENT OEEICE.

ELIAS R. LOCKWOOD, OF BEATRICE, NEBRASKA.

VDRlLLlNG-NIACi--HNE SPECIFICATION forming part of Letters Patent No.504,599, dated September 5, 1893.

h Application tiled April 24, 189]..l Serial No. 390,348. (No model.)

To all whom it may concern:

Be it known that i, ELIAS R. LoCKwooD, a citizen of the United States,residing in Beatrice, Gage county, State of Nebraska, have inventedcertain new and useful improvements in Drilling-Machines, of which thefollowing is so full, clear, and exact a description as will enableothers skilled in the art to which they appertain to make and use thesame, reference being made to the accompanying drawings, in which*Figure i, is a perspective view or" my improved drilling machine. Fig.2, is a detailed view of the rigid collar and the sliding collar, andthe pipe and chains of the drill proper. Fig. 3, is a detailed view of.the sliding collar with the parts prepared separate. Fig. 4, is asimilar view of the rigid collar.

The object of my invention is to provide a drilling machine by the useof which, the greatest amount of drilling may be accomplished in theshortest possible time and with the least expense of physical andmechanical force.

In the accompanying drawings, A, designates the walking beam or leverproper, which is attached to a jack B, on the ladder B', of the derrickC. The walking beam A, is bifurcated at its free end and in the lowerouter portion of the slot F, formed by the bifurcated ends of the beamproper, is secured the friction roller D, which is journaled on suitablebearings D. The friction wheel D, is adapted to run on the face of thedouble eccentric cam L, which is rigidly secured to the shaft L', whichcarries the cog wheel N, and the sprocket wheel M, which latter isconnected through the medium of the sprocket chain M', with the pinionM2, on the shaft M3, through the medium of which rotary motion isimparted to the sprocket wheel M, and the double eccentric cam L, andthe cog wheel N. The cog wheel N, meshes with a correspondingly toothedpinion on the shaft of the ily wheel O.

The drill stem proper is designated by the letter E, which in thisinstance is a hollow pipe. This drill stem passes through the slot F,which extends back to the point a', through which at this point thedrill extends vertically through the walking beam,where it is free toreciprocate verticallythrough the slot in the walking beam and virtuallyindependent of it, considered apart from the operating mechanism of thedrill proper. The drill E, is provided with a rigid collar K, which maybe adjusted from time to time and locked in position on the drill.Beneath this rigid collar K, is a double ended sliding collar J to eachend of which is secured a chain H. These chains extend up approximatelyparallel with the drill E, and over the shives G Gr and connect with thelink J', which is provided With a feed screw S, by means of which thechains H H, are simultaneously adjusted to any predetermined length. Thefeed screw is supported by a stop s, through which extends the bolt b,which is screw-threaded to correspond with the screw threads on theinside of the feed screw. Rotary motion is imparted to the drill in theusual manner.

The operation of my device is as follows:- The machine being set inmotion, the faces of the double eccentric cam L, will raise the rollerD, which is journaled beneath the bifurcated ends of the walking beam A,thus raising the walking beam until the roller D, drops from the sharpfree end of the cam. The beam and the double ended collar .l will thendrop and the drill E, will be allowed to fall and do its work. The driveWheel will continue to rotate the double eccentric cam and its shaft,and will regulate the speed of the same until the other half of the canicomes around and raises the walking beam thus repeating the motion, asabove described. Natel is forced through the pipe or drill by a forcepump and it passes down through the pipe and comes up on the outside,completely washing away all chips and fragments which are cut up by thedrill and keeping the face of the rock always clean.

From the foregoing, it will be readily understood that a drill operatedin the manner shown and described, will do a much greater amount of workthan any other known machine with the same amount of applied power.

I do not wish to be understood as' limiting myself to the exactconstruction shown and described, as many of the details may be variedat will and mechanical equivalents substituted therefor, withoutdeparting from the spirit of my invention, and without in any wayimpairing its usefulness.

Having described the objects, uses, and ada IOO vantages of my device,what I believe to be new and what I wish to secure by Letters Patent,and therefore claim, is-

l. In a drilling machine of the character 5 described, a walking beam;in combination with a drill and provided with a double chain and slidingcollar and a drill having a rigid stop secured thereto in the line ofthe path of the sliding collar, substantially as described 1o and forthe purpose specified.

2. In a drilling machine of the character described, the main walkingbeam having an opening through which extends the drill; in combinationwith a drill provided with a rigid r 5 stop secured thereto and in theline of the path of the sliding collar; in combination with a doubleended sliding collar provided with a pair of cables secured to a link,in common, and provided with shives secured to the 2o walking beam, andalso provided with a feed screw, operating the link to which the chainsare connected to adjust the same, substantially as described.

3. In a drilling machine of the character 25 described, a hollow drillprovided with a rigid stop secured thereto, said stop adapted to beadjusted and locked in any position desired; in combination with atilting walking beam, having an opening through which the drill 3opasses, and provided with a pair of shives and a pair of chains,supporting a sliding collar, which encircles the drill beneath the rigidstop, said chains adjustable, through the medium of the screw threadedbolt b, connected with a link J', extending through a stop s, 35provided with a hand screw S, substantially as and for the purposesspecified.

4. In a drilling machine o f the character described, a shaft carrying adouble eccentric cam and a sprocket wheel and a gear wheel, meshing witha pinion on a second shaft, provided with a ily wheel; in combinationwith a walking beam, provided with a slot F, at the open end of which isa friction wheel D, and through the inner portion of which extends 45the drill E, and the drill provided'with a rigid stop and a slidingcollar encircling the drill beneath the stop and adjustable cables forsupporting the slidingv collar and adjustably secured to the walkingbeam, and the means 5o for operating the same, substantially as and for`the purpose specified.

In testimony whereof I have hereunto set my hand and affixed my sealthis 20th day of April, A. D. 1891.

ELIAS R. LOCKVVOOD. [L. 5.]

In presence of- J. B. MEYER, ALEX. GRAHAM.

